Tongs.



A i In 'WILLIAM IaIILTON'BRG /VN. OF JGHNSTG'WI I. PZNFSYLVANIA TONG Specification. of Letters Patent.

Application filed June 29, 1914. Serial No. 847,893.

To all Hf/lOf/L it in (11 concern Be it known that l, lViLLmM HIT/yon;

Bnon'x.n citizen of the United Stu-ins. re

siding at Johnstown. in the county oi Cznnhrni and State of Perms vnnm. have in; vcntecl a new and useful Tongs, i' which I are he following a spccilicn'l'ion.

My invcntion relates to the ronstru '-tion of tongs, and more particularly to tongs usevl in handling the crucibles oniplovcrl in making crucible steel. (finch crucibl t, which are nnirlc of clay or pliunlmgo. hecome softened when subjected to the intenne heat of the crucible fnrnzice. so as to he easily crushed or distorted when gripped. or clamped by the jaws of tie tongs ordinarily employed in handling the heated crucibles.

One object of my invention is to provide tongs of novel construction having iin provecl means for engaging with tlllll grasping the, crucibles in the handling thereof incidental to making and pouring the molten metal. so (18 to avoid cracking or crushing and prevent distortion of the highly heated crucibles.

Another object of my invention is to provide a tongs having improved incnns where-- by handling of the crucible in removing the cruoihlc from the furnacc nnvl in pouring the molten metal from the crucible is fzicilitficclil.

Still further objects of the invention will appear hereinafter as the invention is more fully (lcscribncl in the specification and poinlml out in tho appended claims.

Referring" to the vlrovving s. forming purl of this s} ccifi ntion. Figure l is :i itle elevation, partly in section. showing tongs constructed and arriingcl'l'iu accordance with my invention. Fig. 52 a plan partly in section of the tongs construction shown in Fig. l. v on the line lllill of Fig. 2. showing the construction of the hinge or joint of the lzongs and the swivel construction onnliling the longs to he turned or tigioccl in the crucible pouring operations. i is :1 side olcvntion. partly in .3 .ction. showing :1 modified onrl proicrred form of tongs constructr-il and arranged in :m-onlunco with this invimtion. Fig. 3 a plan, will}; in section. oi tho :lPPZll'llIllFl shown in Fig. i. Fig. (i is u transverse section. tnlwu on the line Vl-Vl oi Fig. showing tho coir stun-lion of tho hinge and swivel usml on the tongx oi Figs. and (lo- Fig. l is Fig. is a transverse section taken (lcviuo. The lrn.

(Ill o 'icning" iln-rothiw" c i Face 0% this ring l? provilm l peripheral groove r i. S51.

tail plan showing the tong. and mg groom on tincnlls m the i tongs.

ln the m-i-mnpnuving ilrzivvin to Figs. 1. 2 zlnal l. 1 damignnlo lhc {no in llili'w i. wi l: UT" iii-1'3 f rnnnl inlc I which is mmmvhui. loo '5 provilloil on onciul is employed so holn tion in gripping: n inns 2 :ml 3 of tho Mont portions 57 on the owls. t1 illLll, when the tons:- nrc clos Stops prev ntizuir pinching or the crncihli-s. to crushing U1 llLl-Oltlflil of gg'i'zisncd by the Longs.

of the tongs nr xvurilly vxi'cnlliv vmrllly ctvtcnlll.

being curvcil to l.. of Yho ouisulc of lhc cine of which in invlim" in Fig. l. have l'lzittci to where Lhcv are i (fl'UbS, 11ml ilvof pircgisforing o cninss in ciom of t:

hir In joint pivot pin mill :1 hcni'l ouch crul oi the pivot pin ring in position on l6. 16. are po on cnoli RlIlQ or pivot pin extends. to pr: lhc roins lcn viso of \vithoui interfering with closing movcincnt of the lungs. The 3W" mounted within lin trunnions l9 l3. llOllS lMlIlgl Sill of the linl; 90 o ponvl il h :1 chain i lion from :1 c-rnno wardly extending grooves or depressions 22 are also provided in the trunnion ring, at diametrically opposite points, as is best shown in Figs. 2 and 3, to enable the heads 5 1.5 on the pivot pin to enter the groove 21. In assemblingthe parts of the tongs of 1. 2 and 3 the jaws and 3 are pivoted together by means of the pivot pin 13 extending through the holes in the reins 4: and

m the fillers 16 being placed in'position within the swivel ring I l and. the heads then formed. on the ends of the pivot pin. The trunnion l? with the link 20 formed the trin niii s thereon, is then 'rion, the lungs and. swivel ring; :a rotate-ii at l-Til time so that 01" the pivot pin 13 will on 1o; extending to the .ion rin l7. 1 are t" i turned axially, the pivnt pin '13 being then located '.\J--:ll grnove l in the surtnt i. the tongs lengtlm trunnion rin \vhile permitn. an avis lcl. with the 1 nail the t ne; rei;.s. crai' nictioli shown i 'e curved to the of the J. reins so a the fill'x respoi owe]? with a i n t the tongs in the amnion ring l7 ann prevent the linovertu ring a crucible l. 'ihe jaws 2' 5 F gers l0 and :s l l and the together with a pivot l rc isi'eriag recess is vs 2, o e to g movement of the llltie rein I5 is and is provided with which extends Qt 1n the mun rn'ig 1'? in the s. in the swivel ring l l' is held in place in the swivel ring by means 01" the flanged plate 25 which is fastened by the tap bolts 26 to the filler plates l6, 16.

In using my improved tongs shown in Figs. 1, 2 and 3, the jaws are opened by means of the reins at and 5, suflicicntly to admit the crucible. The jaws-2 and 3 are then closed and the keeper 8 is then positioned on the reins 'l and to fasten the jaws 2 and 3 in closed position around the crucible, the stops 9 then being in engagement so as to prevent crushing pressure on the crucible 12.- lhe curved. lingers l0 and 11 on the jaws of the tongs loosely engage with the curved surface of the heated crucible to prevent renmval or displacement of the crucible when the aws are in closed position. The crucible hen li't'terl through the medium of the reins and transported on the trolley or crane .lrcrn which the tongs are suspended to the pouring station. The tongs and crucible are i then rotated axially relative to the swivel ise with ring and trunnion rings to tip or tilt the I crucible so as to pour the molten metal t'mm the crucible, the handle 7 forming a convenient means for this turning movement. After the crucible is emptied the tongs are employed to move the empty crucible to the place of i: .osal, and when disenfrom. the crucible the tongs are in readine s to repeat it ie above described 0peraticns.

in handling crucibles with tongs constructed as shown in Figs. 4, 5, 6 and 7, 10 the. operations will be as has just been described.

The novantages of my invention will be apparent to those skilled in the art. The provision of thestops on the ends of the jaws of the tongs prevents gripping of the crucibles end the possibility of crushing which would result therefrom. The curved lingers projecting from opposite sides of the in loosely engage with and retain the cruno rihle in place while preventing removal or dislodginent thereofwhile the tongs jaws are closed. By having the jaws of the tongs and the rear end of the reins extending lengthwise parallel in different planes the liability of overturning the crucibles is lessened and prevented. The novel means for suspending the crucible tongs permits;

lifting of the crucible by the tongs and the turning movement of the cruciblexneces- 3 sary in pourin The ap ar'atus is simple and avoids the necessity 0 frequent'repans. Modifications in the construction 'and an rangemcnt of the parts may be made without departing from my invention as'defined in the appended claims.

I claim:--

A tongscoinprising curved jaws havreins a pivot pin connecting the jaws,

id reins having bent portions connecting 1 agm um iangthmse gamfiel ywfzions m mans, Jigs an sand gaws is 11mm the sf. a ape shah ex ming fingezs on the jaws n-armngsd w is-ssaiy engage amimalmmn cruci'bies oetwaan said jaws W1 ih'e jams are singed :2, tongs cemprgsing @vctaai jaws; 213V;

mg @3215, a. plvcs pm thammr, a 3wive1 ring 1% Lhmugh which give; pin wands; trunman 21 which smfi "m we} 2mg mtwi 11-03: PKXBVQFAB relmwemmfi 0:? the swivs Bring Q; link on sing jaws havpm therefcr, said reins e @jlljfi 09211353 the jawfi para. Kai pericieas G2 the reins, 5 3% Ig thr-augh which tha pivet a twimionring i1; said my bani,

swiva ring is rotatabiy mounaea, mamas 5507: reventing reliant-e anal movement. of the swiviaing and trunnion mg, agd a swivel 111; on which the trunniorf iifig is mmmte. .4. A tang; compnsl ng pivoted game hw- 'iilg reins, pivotpin therefnr, a swiafgl .fizheraof fie recive the heas 51" Sam pm and thereby retain the trunmon 11mg 13 piae on the smvei rang, and :2, swivel m: which the trunnion ring is fastened.

In testnnony whereof, I has hereumc seq WELIAM MILTON BEQWR fiitn esses:

ROBERT J. BRUQE:

H. 1%". SMITH. 

